klimenkov
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 Alik Klimenkov
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Questions Asked

klimenkov:
Group Title
My English is not perfect, so please help me to correct mistakes in resume.
…
 updated 10 months ago
 6 replies
 2 Medals
Mathematics

klimenkov:
Group Title
Two points on the plane \(A\) and \(B\) are given. \(AB = 2\). \(C\) is a randomly picked point in the circle of the radius \(R\) with the…
 updated one year ago
 37 replies
 5 Medals
Mathematics

klimenkov:
Group Title
\[\int_{\frac{\pi}2}^{\frac{\pi}2} \frac{\sin^{2014}x}{\sin^{2014}x + \cos^{2014}x} \, dx\]
 updated one year ago
 20 replies
 4 Medals
Mathematics

klimenkov:
Group Title
Why does the formula \[\int x^n\,dx=\frac{x^{n+1}}{n+1}+C\]give the wrong result if we put \(n=1\) ?
 updated 2 years ago
 42 replies
 6 Medals
Mathematics

klimenkov:
Group Title
What is the difference between accuracy and precision?
 updated 2 years ago
 17 replies
 3 Medals
Mathematics

klimenkov:
Group Title
How to write this symbol in LaTeX?
 updated 2 years ago
 20 replies
 4 Medals
Mathematics

klimenkov:
Group Title
I think this can be a math problem. Help me please.
http://openstudy.com/study#/updates/51331df3e4b093a1d948e93d
 updated 2 years ago
 2 replies
 2 Medals
Mathematics

klimenkov:
Group Title
Help me please.
 updated 2 years ago
 27 replies
 2 Medals
Mathematics

klimenkov:
Group Title
Compute
\[\huge{\sqrt{2}^{\sqrt{2}^{\sqrt{2}^{\sqrt{2}^{\sqrt{2}^\ldots}}}}}\]
 updated 2 years ago
 42 replies
 3 Medals
Mathematics

klimenkov:
Group Title
@whpalmer4 asked an interesting question.
If there is only one 3digit number in the base \(b\) the sum of the numbers of which is \(b+1\) t…
 updated one year ago
 22 replies
 9 Medals
Mathematics

klimenkov:
Group Title
Find all 3digit numbers such that the sum of the digits is 11 times less than the number.
 updated 2 years ago
 49 replies
 5 Medals
Mathematics

klimenkov:
Group Title
A tutorial for @RolyPoly.
Linear independence of the vectors.
Check if the vectors \(\vec{v_1}=(1,0,1), \vec{v_2}=(2,1,3), \vec{v_3}=(1,1,…
 updated 2 years ago
 3 replies
 No Medals Yet
Mathematics

klimenkov:
Group Title
Can somebody explain why this answer was not correct?
(picture in the comments)
 updated 2 years ago
 8 replies
 2 Medals
Mathematics

klimenkov:
Group Title
I just ask you for help. I want to learn English and I can solve different math problems. I want someone to be my English tutor in return I …
 updated 2 years ago
 7 replies
 2 Medals
Mathematics

klimenkov:
Group Title
Can you give some advice how to improve my English? I think I can speak it and I know a lot of words. But sometimes I use them not correctly…
 updated 2 years ago
 3 replies
 No Medals Yet
Mathematics

klimenkov:
Group Title
Please. Correct my English. Thank you.
I'd like to tell you some stories that have happened in my life. I just want you to check my writi…
 updated 2 years ago
 1 reply
 2 Medals
Mathematics

klimenkov:
Group Title
\[\lim_{n\rightarrow\infty}\frac{\sqrt[n]{n!}}{n}\]
 updated 2 years ago
 33 replies
 3 Medals
Mathematics

klimenkov:
Group Title
There are \(n\) balls in the box. There are only black or white balls in the box. The number of white balls is unknown. Assume that that any…
 updated 2 years ago
 18 replies
 No Medals Yet
Mathematics

klimenkov:
Group Title
It will be very good, if among this very big number of questions in Mathematics would be a selected questions. So one can read them and lear…
 updated 2 years ago
 6 replies
 5 Medals
Mathematics

klimenkov:
Group Title
cvcvcv a
 updated 2 years ago
 No Medals Yet
Mathematics

klimenkov:
Group Title
There are \(n\) balls in the box. There are only black or white balls in the box. The number of white balls is unknown. Assume that that any…
 updated 2 years ago
 16 replies
 3 Medals
Mathematics

klimenkov:
Group Title
What about this? \[\int{\frac{\sin x+\cos x}{\cos x  \sin x}}dx\]
 updated 2 years ago
 14 replies
 4 Medals
Mathematics

klimenkov:
Group Title
Two persons want to meet. They know the place where to meet. The time when one of them come to the place of meeting is equiprobable and lies…
 updated 2 years ago
 52 replies
 1 Medal
Mathematics

klimenkov:
Group Title
How many natural solutions does this equation have?
\[x_1+x_2+\ldots+x_N=n\]
 updated 2 years ago
 81 replies
 4 Medals
Mathematics

klimenkov:
Group Title
How many nonnegative integer solutions does this equation have?
\[x_1+x_2+\ldots+x_N=n\]
 updated 2 years ago
 42 replies
 2 Medals
Mathematics

klimenkov:
Group Title
Prove for a medal.
The sum of the first \(n\) terms of the arithmetic sequence \(1+2+3+\cdots+n\). Try to find as more proofs as you can.
 updated 2 years ago
 16 replies
 No Medals Yet
Mathematics

klimenkov:
Group Title
Prove for a medal.
The sum of the first \(n\) terms of the geometric sequence \(S_n\).
\(b_1\) is the first term, \(q\) is the ratio.
 updated 2 years ago
 10 replies
 3 Medals
Mathematics

klimenkov:
Group Title
There are \(n\) lottery tickets in sale. \(m\) of them are the winning tickets. You have bought \(r\) tickets. What is the probability for y…
 updated 2 years ago
 21 replies
 2 Medals
Mathematics

klimenkov:
Group Title
Find the rectangle of maximal area inscribed in a circle of radius R.
 updated 2 years ago
 28 replies
 3 Medals
Mathematics

klimenkov:
Group Title
Tutorial. How to solve the quadratic equation.
 updated 2 years ago
 7 replies
 9 Medals
Mathematics

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